Android/iOS: Want to give the numbers or emails of a few repairmen to your buddy? ContactBox is the easiest solution to create custom lists from your contacts and share them with others.

To do something like this right now, you need to create a common Gmail account and sync contacts. But ContactBox is a simple, free app for both Android and iOS where you can just create lists of people from your existing contacts or add new ones. You can individually edit each contact too, adding them under groups or titles like "company X" or "doctors."

To keep your partner, housemates or office colleagues always updated with commonly used contacts,…
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When you're done, just share the list with anyone else and they'll be able to access it as long as they have ContactBox installed. The list is then updated when either user adds or edits any contact. It's a great way to have a list of good take-away restaurants with your friends, or a master contact list for your office that updates when anyone quits or joins.